Add 75/84 and 72/63
1st number: 75/84, 2nd number: 1 9/63
75/84 + 72/63 is 57/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 63 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 84 × 3 = 252,
75/84 = 75 × 3/84 × 3 = 225/252 - Likewise, for the 2nd fraction, since 63 × 4 = 252,
72/63 = 72 × 4/63 × 4 = 288/252 - Add the two like fractions:
225/252 + 288/252 = 225 + 288/252 = 513/252 - 513/252 simplified gives 57/28
- So, 75/84 + 72/63 = 57/28
In mixed form: 21/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: